Lawn & Landscaping Calculators
Mulch, soil, gravel, sod and stone - bags or bulk by the yard. 24 free calculators.
Landscaping materials are sold two ways - small bags for a weekend project, bulk by the cubic yard for anything larger - and the break-even point between them isn't obvious until you've done the math both ways.
These calculators size mulch, soil, gravel, sand and stone by depth and area, using the depth extension services actually recommend for each material, and show both the bag count and the bulk-yard figure so you can compare.
Last reviewed September 2026
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All 24 Lawn & Landscaping calculators
Mulch Calculator
Get the cubic yards and 2 cu ft bags of mulch a bed needs at your chosen depth, with a bagged-versus-bulk recommendation and optional cost estimates.
Gravel Calculator
Estimate the cubic yards and tons of gravel for a path, driveway topping, or bed, with an adjustable density for the gravel type you are buying.
Soil Calculator
Get the cubic yards or bags of topsoil or garden soil to fill a raised bed or garden bed, with a settling allowance and a bagged-vs-bulk recommendation.
Sod Calculator
Calculate how many pallets of sod a lawn needs from its length and width, with a waste allowance and your sod supplier's coverage per pallet.
Sod Weight Calculator
Find the weight of a sod order in pounds and tons from the lawn's length and width, with an adjustable weight per square foot for hauling checks.
Stone Calculator
Get the cubic yards and tons of decorative or landscape stone for a bed or border from its size and depth, with an adjustable density for the product.
River Rock Calculator
Get the cubic yards and tons of river rock for a bed, dry creek, or drainage feature, from its length, width, and depth, with adjustable density.
Retaining Wall Calculator
Estimate retaining wall blocks, courses, and blocks per course from your wall's length and height, using the face size of your manufacturer's block.
Grass Seed Calculator
Calculate pounds of grass seed for a lawn from its length, width, and seeding rate, with a waste allowance and an optional seed price estimate.
Pool Volume Calculator
Get your pool's volume in gallons and cubic feet from its shape, size, and shallow and deep end depths, for rectangular, circular, or oval pools.
Acreage Calculator
Use this acreage calculator to get a lot's size in acres and square feet from its length and width. Irregular lots can be split into rectangles first.
Elevation Grade Calculator
Use this elevation grade calculator to find percent grade, slope ratio, and angle from a rise and run, with code checks for drainage and ramps.
Lawn Mowing Calculator
Estimate how many hours a mowing job takes, and its labor cost, from your lawn area, mower deck width, travel speed, and efficiency for overlap and turns.
Sand Calculator
Estimate the cubic yards and tons of sand for a sandbox, paver bedding layer, or play area, with an adjustable density for dry, damp, or wet sand.
Plant and Flower Calculator
Work out how many plants your bed needs at a chosen spacing, for a square grid or a denser staggered layout, with a loss allowance added to the count.
Lawn Fertilizer Calculator
Work out how many bags of lawn fertilizer your yard needs from its area, target nitrogen rate, and the first N-P-K number printed on the bag.
Rainwater Harvesting Calculator
Estimate how many gallons of rainwater a roof collects from a given rainfall, with a runoff coefficient for losses, to size a barrel or cistern.
Flagstone Calculator
Estimate the tons of flagstone for a patio or walkway from its area, thickness, density, and waste allowance, with the total weight in pounds too.
Landscape Edging Calculator
Get the edging sections and stake count for a rectangular or circular garden bed, from its dimensions and your edging product's section length.
Sprinkler Zone Calculator
Find how many sprinkler heads one zone can run at your available GPM, and how many zones your irrigation system needs to cover all of its heads.
Fire Pit Calculator
Get the blocks per course, total block count, and gravel base in cubic yards for a round DIY fire pit, from its interior diameter and block width.
Raised Garden Bed Calculator
Get the number of boards and corner posts for a raised garden bed frame, plus its true height, from its length, width, board size, and layer count.
French Drain Calculator
Get the gravel in cubic yards, filter fabric in square feet, and pipe length for a French drain trench from its length, width, depth, and pipe size.
Ramp Length Calculator
Find the horizontal run and surface length a ramp needs to climb a set rise in inches, at the ADA's 1:12 maximum slope or a gentler 1:16 or 1:20 ratio.